Cycles procedural stripe texture along slope
I did now a little bit of work on that problem. I didn't get it perfect but it's pretty good I think so I wanted to share it. My attempt was to take the Normal of the currently rendering Pixel and calculate the slope 90° downwards from the normal (that's a tangent to the surface). My results with that are ok but not perfect because at the 3 edges of your model it will fail almost completly. I tried my best to counteract that with the Pointyness value and different direction of the tangent and so on but nothing did quite work exactly like I wanted it. Here are the results:





You can see how perfect it works an that planes. The stripes are always downwards, no matter how its rotated.